Add a loader state for HiPE code loading

Just like the BEAM loader state (as returned by
erlang:prepare_loading/2), the HiPE loader state is contained in a magic
binary.

Eventually, we will separate HiPE loading into a prepare and a finalise
phase, like the BEAM loader, where the prepare phase will be implemented
by hipe_unified_loader and the finalise phase be implemented in C by
hipe_load.c and beam_load.c, making prepare side-effect free and
finalise atomic. The finalise phase will be exposed through the
erlang:finish_loading/1 API, just like the BEAM loader, as this will
allow HiPE and BEAM modules to be mixed in the same atomic "commit".

The usage of a loader state makes it easier to keep track of all
resources allocated during loading, and will not only make it easy to
prevent leaks when hipe_unified_loader crashes, but also paves the way
for proper, leak-free, unloading of HiPE modules.

1 files changed, 1 insertions, 4 deletions

diff --git a/erts/emulator/beam/module.c b/erts/emulator/beam/module.c
index 93ce8fcf9f..5c56ad20df 100644
--- a/erts/emulator/beam/module.c
+++ b/erts/emulator/beam/module.c
@@ -79,10 +79,7 @@ void erts_module_instance_init(struct erl_module_instance* modi)
 #ifdef HIPE
     modi->first_hipe_ref = NULL;
     modi->first_hipe_sdesc = NULL;
-    modi->hipe_code_start = NULL;
-# ifdef DEBUG
-    modi->hipe_code_size = 0;
-# endif
+    modi->hipe_code = NULL;
 #endif
 }